12-10-08: Kirkus
I'm mostly with Al on this one. The paper that Jea48 refers to is interesting and has some valid information, but there are also some typos and mistakes . . . and I think that some of his conclusions are a little questionable.
Kirkus,
Maybe you are not familiar with Charles Hansen
Charles Hansen - Manufacturer,
Ayre Acoustics, Inc.============================
12-10-08: Zargon
From an electical engineering perspective, separate dedicated circuits all connected to the same subpanel would all be in parallel with each other. This means that any spurious artifacts from a component fed back into its dedicated circuit would be superimposed on all other dedicated circuits. Other components power supplies would have to deal with these artifacts, e.g., filter them out. In this regard, this approach is not any better than a single dedicated circuit.
Many would disagree with you.
In the instance of a sub panel where the sub panel might be installed in a close proximity of the audio equipment where the length of the dedicated branch circuits were very short, then I would agree with you.
Quote from
Shunyata Research: There is up to a hundred feet of wire in the walls, so the last 6 feet of power cord cant possibly make any difference.
Answer: The PC is NOT the last 6 feet as stated in #1 and the local current and EM effects directly affect the sonic performance of the component. The power cord is not the last 6 feet, it is the first 6 feet from the perspective of the component. The further a noise source is from a component, the less of an impact it will have on the components power supply. The high-frequency noise sources that have the greatest impact on audio and video performance are the system components themselves -- which are usually all in close proximity of one another and all emit radiated fields of high-frequency noise. A well designed power cord can act as a noise-isolated extension of the primary winding of a components power supply and will help isolate the power supply from the fields of radiated RF and EM noise energy that is ever present in all electronics systems.
The further a noise source is from a component, the less of an impact it will have on the components power supply.
If you reread Hansen's article you will find he is basically saying the same thing
.